MIC2954-02WT

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The MIC2954-02WT is a fixed positive low-dropout regulator delivering a 5V output with ±0.5% accuracy and a maximum current of 250mA. It operates within an input voltage range of 2.0V to 30V, featuring a dropout voltage of up to 600mV at full load. The device includes logic-controlled shutdown, an error flag for undervoltage detection, and robust protection against reverse battery connections and automotive load dump transients.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated error flag output warns of low output voltage conditions
• Logic-controlled electronic shutdown capability
• Robust protection against reversed battery and high-voltage transients

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive electronics
• Battery powered equipment
• Cellular telephones
• Laptop, notebook, and palmtop computers
• PCMCIA VCC and VPP regulation/switching

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'WT' confirms TO-220-3 packaging and RoHS compliance status. Confirm that the '-02' designation strictly corresponds to the ±0.5% output voltage tolerance required by the design. Ensure the manufacturer source aligns with Microchip Technology following the Micrel acquisition.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a precise 5V rail is needed with tight tolerance requirements. The wide input voltage range supports direct connection to unregulated sources. The inclusion of an error flag allows for system monitoring of input supply health without external circuitry.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the MIC2954 family of efficient, bulletproof voltage regulators. The series offers various packages including SOT-223, SOIC-8, and TO-92, alongside adjustable versions. The MIC2954-02 variant specifically provides the highest precision among the fixed-output options.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

MIC2954-02BT (older non-RoHS version)

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the Error Flag pin?

The Error Flag is an open-collector output that goes active-low when the output voltage drops out of regulation by approximately 5%, indicating issues like failing batteries or thermal limiting.

How does the Shutdown pin operate?

The Shutdown pin is an active-low input; applying a low voltage enables the regulator, while a high voltage switches it off to minimize quiescent current consumption.